What term describes advances in physical abilities?

The term that best describes advances in physical abilities is "Physical Development." This encompasses the progression and maturation of an individual's physical capabilities, which includes improvements in strength, coordination, balance, and overall motor functions.

While "Motor Skills" refers specifically to the learned abilities related to movement, including fine and gross motor skills, it doesn't capture the broader concept of development over time. "Developmental Milestones" is a term used to mark significant achievements in physical, cognitive, and social skills, but it doesn't directly address the continuous improvements in physical abilities. "Physical Growth," on the other hand, pertains more to the increase in size and proportion of the body rather than the enhancement of physical capabilities.

Thus, "Physical Development" encompasses the cumulative improvements and advances in an individual's physical abilities, making it the most fitting term in this context.